1. chronic pulmonary emphysema;Medicine,(Baltimore), 28, 201.
2. r6gulation Arch;P.,1965
3. Briscoe, W. A., obstructive and Nash, pulmonary E. S. (1965).
4. Brodovsky, D., Macdonell, J. A., and Cherniack, R. M. (1960).
5. The emphysematous and bronchial types of chronic airways obstruction;Burrows, B.; Fletcher, C.M.; Heard, B.E.; Jones, N.L.; Wootliff, J.S.;Lancet,1966